There was a discussion of this topic recently on the ASSEMBLER list or on
IBM-MAIN, I don't recall exactly, on which list.
Things are worse, IIRC; there is no operation exception, but: you get a
specification exception 0C6, which is not explained in the PoOp, and the 0C6
means that the cipher/encipher feature is not activated on that particular
machine, because it was exported to a foreign country first.
There are reasons for 0C6 like wrong parameter to the KxM instructions, but
there is the reason outlined above, too, which is not mentioned in the PoOp.
IIRC, you need help from an IBM engineer to get the feature activated on the
particular machine.
(everybody would understand the 0C1, but not the 0C6)
Kind regards
Bernd
Am 04.02.2014 20:41, schrieb T.T.:
> I work with a company that buys and sells z9's here in the US and uses
> them in our DR facility.
>
> We have handled 2 different z9s that were delivered originally in the US
> that did NOT have the feature installed. Use of the KLM instructions
> returned an "operation exception" on both boxes.
>
> Tony Thigpen
>
> -----Original Message -----
> From: R.N.
> Sent: 02/04/2014 01:50 PM
>> I vaguely remember seeing references that IBM machines shipped to some
>> countries are missing the cryptographic features due to export
>> restrictions.
>> Does anyone know if disablement of the cryptographic functions
>> affects the
>> SHA functions of the KIMD/KLMD instructions? Or can I assume that if
>> the
>> machine is a z9 or higher, the SHA-1 function at a minimum will be
>> available?
>>
>> Basically, if we require our software to be run on z9 or later hardware,
>> can we ship software that uses KLMD with the SHA-1 function and not
>> have it
>> fail due to that function not being available?
>> And no, I really don't want to dual path the code with my own
>> implementation of SHA-1 when I can't use KLMD.
>>
>> R.N.
>>
>
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